Webhook to Beehiiv Error Message - Custom Fields

[kurt]

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IjU3NjYwNTZiMDYzMzA0MzQ1MjZhNTUzMTUxMzAi_pc

hi,

I'm getting an error back from Beehiiv, but I think its due to formatting, not that the custom fields are not available, as I've made them and verified.

I made this video of the issue, including both Pabbly and Beehiiv screens : https://d.pr/v/k3GvX6

screen shot here

Screen Shot on 2025-07-02 at 11-52-18.png

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d.pr

when I send a test of the api, I get back 'unprocessable_entity' from Beehiiv. and I have verifed in Beehiiv that the data is not appearing.

can you help me?

 

[kurt]

Not sure if it's related, but this is something happening in the same webhook, with the data passing into pebbly. customer.io requires the json webhook to have placeholders, but I'm only getting the default placeholders, (ie default: 'form name') not the data, int Pabbly. Is there an issue with the json?

video of issue. https://d.pr/v/YnQlOr

JSON

{
"campaign_id": {{ campaign.id }},
"segment_id": 38,
"customer.email": "{{ customer.email }}",
"customer.first_name": "{{ customer.first_name }}",
"customer.SIGNUP_URL": "{{ customer.SIGNUP_URL | default: 'URL' }}",
"customer.DUE_DATE": "{{ customer.DUE_DATE | default: 'due-date' }}",
"customer.utm_source": "{{ customer.utm_source | default: 'utm_source' }}",
"customer.utm_content": "{{ customer.utm_content | default: 'utm_content' }}",
"customer.FORM_NAME": "{{ customer.FORM_NAME | default: 'form name' }}",
"customer._created_in_customerio_at": "{{ customer._created_in_customerio_at | default: 'cio_created_date' }}"
}